I also experienced this in the nether, I mined blocks, teleported to portal, the blocks I mined were mined but when I moved Steve to the blocks location that I mined I took damage like I was suffocating.
I also experienced this in the nether, I mined blocks, teleported to portal, the blocks I mined were mined but when I moved Steve to the blocks location that I mined I took damage like I was suffocating.